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One-step preparation method of three-dimensional mesoporous nanocage carbon materials for supercapacitors

A supercapacitor, nano-cage technology, applied in nano-carbon, nano-technology for materials and surface science, nano-technology, etc., can solve the problems of high production cost, complicated steps, complicated preparation process of nano-carbon materials, etc. The effect of accelerating characteristics, improving utilization, and shortening activation time

Active Publication Date: 2015-09-23
ANHUI UNIVERSITY OF TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

As can be seen from the above process, the method has complicated steps, long reaction time and large energy consumption.
[0005] Generally speaking, the preparation process of the above-mentioned nano-carbon materials is relatively complicated, and the production cost is high.

Method used

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  • One-step preparation method of three-dimensional mesoporous nanocage carbon materials for supercapacitors
  • One-step preparation method of three-dimensional mesoporous nanocage carbon materials for supercapacitors
  • One-step preparation method of three-dimensional mesoporous nanocage carbon materials for supercapacitors

Examples

Experimental program
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Effect test

Embodiment 1

[0018] Example 1: Three-dimensional mesoporous nanocage carbon material MNC 12-6 Concrete preparation process is as follows:

[0019] According to the method described in the literature (Microporous and Mesoporous Materials58 (2003) 105-114), Zn code-named MOF-5 was prepared 4 O(BDC) 3 . Weigh 12g Zn 4 O(BDC) 3 Put it into a mortar, then add 6g of solid potassium hydroxide, mix and grind the two raw materials for 1 to 2 hours, then transfer the resulting mixture to a ceramic crucible, place it in a microwave reactor, set the microwave power to 600W, and activate the microwave The time is 20 minutes, microwave heating activation is carried out in a flowing nitrogen atmosphere, the activated product is cooled to room temperature and taken out, the product is ground and put into a beaker, after pickling, hot distilled water washing and drying, a three-dimensional medium for supercapacitors is obtained. Porous nanocage carbon materials. The resulting three-dimensional mesopo...

Embodiment 2

[0020] Example 2: Three-dimensional mesoporous nanocage carbon material MNC 13.5-4.5 Concrete preparation process is as follows:

[0021] Implementation according to the same method as in Example 1, the difference is that Zn is weighed 4 O(BDC) 3 The mass of is 13.5g, and the mass of solid potassium hydroxide is 4.5g. The resulting three-dimensional mesoporous nanocage carbon material labeled as MNC 13.5-4.5 .

Embodiment 3

[0022] Example 3: Three-dimensional mesoporous nanocage carbon material MNC 14.4-3.6 Concrete preparation process is as follows:

[0023] Implementation according to the same method as in Example 1, the difference is that Zn is weighed 4 O(BDC) 3 The mass of is 14.4g, and the mass of solid potassium hydroxide is 3.6g. The resulting three-dimensional mesoporous nanocage carbon material labeled as MNC 14.4-3.6 .

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Abstract

The invention discloses a one-step preparation method of a three-dimensional mesoporous nanometer cage-shaped carbon material for a super capacitor, and belongs to the technical field of preparation of carbon materials. According to the method, an organic metal coordination compound is used as a carbon source and a template, potassium hydroxide is used as an activator, the two components are grinded and mixed and are transferred into a ceramic crucible, and the three-dimensional mesoporous nanometer cage-shaped carbon material for the super capacitor is prepared by microwave heating. The specific surface area of the prepared three-dimensional mesoporous nanometer cage-shaped carbon material is 1041-1595 m<2> / g, the total pore volume is 0.79-1.52 cm3 / g, and the average aperture is 3.05-4.88 nm. By adopting the one-step preparation method disclosed by the invention, the preparation process of the three-dimensional mesoporous nanometer cage-shaped carbon material is greatly simplified, the operation safety is improved and the energy consumption is reduced; the one-step preparation method disclosed by the invention has the advantages of simple process, low cost and the like.

Description

Technical field: [0001] The invention belongs to the technical field of carbon material preparation, and in particular relates to a one-step preparation method of a three-dimensional mesoporous nano-cage carbon material for a supercapacitor. Background technique: [0002] Supercapacitors, also known as electric double layer capacitors or electrochemical capacitors, are mainly divided into electric double layer capacitors and Faraday quasi-capacitors. At present, the electrode materials used in supercapacitors are mainly carbon-based materials, transition metal oxides and conductive polymers. Commercial electric double layer capacitors are mainly based on carbon-based materials. [0003] Mesoporous nanocage carbon materials have high specific surface area and porosity as well as good physical and chemical properties, and are one of the main electrode materials for electric double layer capacitors. The preparation methods of nano-cage carbon materials mainly include vapor de...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C01B31/02B82Y30/00B82Y40/00C01B32/15
Inventor 何孝军韩久凤许国徽方道来王晓婷赵志刚余谟鑫张小勇郑明东
Owner ANHUI UNIVERSITY OF TECHNOLOGY
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